The grandmother who can sniff out Parkinson's: Special skill that can detect crippling condition earlier by noticing changes in the way a person smells leads to pioneering research

Doctors say Joy Milne, 65, has the unique skills to detect the condition
Mrs Milne can identify Parkinson's just from sniffing their T-shirts
She detected a change in her husband Les's odour over two decade which led to him being diagnosed with Parkinson's [...]

Scientists believe that the disease may cause a change in the sebum – an oily substance secreted by the skin – that results in a unique and subtle odour only detectable by people with an acute sense of smell. [...]

Strange article. I suppose earlier detection could be positive, but this does nothing to prevent it or cure it.
I guess the point is this woman has a nose like a bloodhound, and I thought my mother in law was the pinnacle of nasal gas chronometer mass spectrometers.
I stand corrected.